3S PIPELINE INDUSTRY

Grade(UNS):	304/304L;316/316L;321;310S
Outside Dia:	6 -325mm(1/4" – 12.75")
Wall Thickness:	0.50-22mm
Standards(Norm):	DIN 17456/17458, ASTM A213/A269/A312/A790/A270, ASME SA213/SA312/SA269/SA270
Application	Chemical and petrochemical industry, Oil and gas applications, Mechanical and plant engineering and construction
Surface	Pickled/polished outside/polished outside and inside surface
Length	Random length or fix length, Max length is 13M/43FT
Package	knitting strip bundle/wooden box

Steel tube is manufactured to a set outside diameter and wall thickness (e.g. 1.5” OD, 0.065” wall), while Steel pipe is specified by a “nominal” (not actual) inside diameter. The wall thickness of pipe is described by the “schedule”. For example, schedules 5 and 40 pipe have wall thicknesses of 0.065” and 0.109” respectively.

Chemical composition

Grade	Chemical Composition
	C max	Si max	Mn max	P max	S max	Ni	Cr	Mo	Others
TP 304	0.08	0.75	2	0.04	0.03	8 - 11	18 - 20
TP 304L	0.035	0.75	2	0.04	0.03	8 - 13	18 – 20
TP 310S	0.08	0.75	2	0.045	0.03	19 - 22	24 -26	0.75 max
TP 316	0.08	0.75	2	0.04	0.03	10 - 14	16 – 18	2 – 3
TP 316L	0.035	0.75	2	0.04	0.03	10 - 15	16 - 18	2 - 3
TP 317	0.08	0.75	2	0.04	0.03	11 - 14	18 - 20	3 - 4
TP 321	0.08	0.75	2	0.04	0.03	9 - 13	17 - 20		Ti: 5×C%

Mechanical Properties
Grade	Tensile Strength Mpa, (Min)	Yield Strength Mpa, (Min)	%Age Elongation in 50mm gauge length min	Hardness (Max)
				BHN	Rb
301	585	244	56	197	75
304	585	244	56	191	72
304L	585	210	56	191	72
310S	615	245	56	197	75
316	615	245	57	197	75
316L	585	215	56	197	75
321	615	245	56	197	75